I don't think you can pump carbon dioxide into the atmosphere indefinitely and not have a reaction. But there are great scientists such as Freeman Dyson, one of the greatest physicists of the last hundred years, who has studied the question, who believes quite the opposite. The reason transnational action is so difficult is because the major problem with climate change is, A, that there is no consensus, and, B, that the economic cost is simply staggering. Reversing it completely might mean undoing the modern industrial economy.

If you subsidize apples, you get more apples; if you subsidize unemployment, you get more of it.

Ideas matter. Legislative proposals matter. Slick campaigns and dazzling speeches can work for a while, but the magic always wears off.

I would say I see myself as a psychiatrist in remission.

I think if you're going to master policy, especially world affairs, you've got to know history.

The Democratic line is that the Republican House does nothing but block and oppose. In fact, it has passed hundreds of bills only to have them die upon reaching the desk of Senate Majority Leader Harry Reid. He has rendered the Senate inert by simply ensuring that any bill that might present a politically difficult vote for his Democratic colleagues never even comes to the floor.

Identity politics is the mother's milk of the Democratic Left.